According to Cruise Lines International Association (CLIA), tipping rules are at the discretion of passengers on holiday.

They previously told Express.co.uk: “The vast majority of cruise passengers are happy to reward crew members for good service and they find the information and guidelines provided by cruise companies to be accurate and helpful.”

Some cruises include the daily service charge to remove the need to tip elsewhere on the ship.

Others may have a “no tipping” policy altogether with tips being included in the cost of the cruise holiday.